Hydromechanics of fractures and fracture networks. A combined numerical multi-scale and experimental investigation (B05)

我们用高分辨率X射线计算机断层扫描和微流体装置来描述静态和动态的流体饱和裂缝和裂缝网络。除了裂缝的几何特征，我们的目标是定量的裂缝的孔径。这使得表征的流体力学耦合效应，观察主导的流动路径和验证相结合的数值研究。实验是在X射线透明的三轴细胞下定义的围压和轴向应力，以及在高的空间和时间分辨率下的光学透明的微流体细胞。实验结果为粗粒有效材料性质的相邻量化奠定了基础。

We characterise static and evolving fluid-saturated fractures and fracture networks with high-resolution X-ray Computed Tomography and microfluidic devices. Besides the characterisation of the geometries of fractures, we aim for the quantification of the fractures’ apertures. This allows for the characterisation of hydro-mechanical coupling effects, the observation of dominating flow paths and the validation of combined numerical investigations. The experiments are performed in an X-ray-transparent triaxial cell under defined confining pressure and axial stresses as well as in optical transparent micro fluidic cells under high spatial and temporal resolution. The experimental results are the basis for the adjacent quantification of coarse-grained effective material properties.